Which of the following elements can combine with all non-metals with the help of covalent bonds?
Magnesium
Calcium
Oxygen
Hydrogen
Hydrogen can combine with all the non-metals to form covalent compounds as atomic hydrogen is highly reactive.
Whenever a non-metallic combines with another non metal, sharing of electron takes place between their atoms and a covalent bond is formed. A covalent bond can also be formed between two atoms of the same non-metal. The shared electrons are counted with both the atoms due to which each atom in the resulting molecule gets an inert gas electron arrangement of 8 electrons (or 2-electrons) in the outermost shell eg : H2 molecule.
Draw the electron dot structures for the following molecules.
1. Chlorine 2. Hydrogen chloride
3. Methane 4. Carbon dioxide
5. Ammonia 6. Water
7. Oxygen 8. Ethane
9. Nitrogen 10. Acetylene